Botany - Biomolecules Question with Solution | TestHub

Option (1) is the correct answer because, ligases are the enzymes that catalyse the linking together of 2 compounds, e.g., enzymes which catalyse joining of $\mathrm{C}-\mathrm{O},\mathrm{C}-\mathrm{S},\mathrm{C}-\mathrm{N},\mathrm{P}-\mathrm{O}$ etc. bonds. $\Rightarrow$ Options (2), (3) and (4) are wrong as ligase catalyse the joining of $\mathrm{P}-\mathrm{O},\mathrm{C}-\mathrm{O}\&\mathrm{C}-\mathrm{N}$ bonds.